diff --git a/core/modules/migrate/src/Plugin/migrate/process/Explode.php b/core/modules/migrate/src/Plugin/migrate/process/Explode.php
new file mode 100644
index 0000000..4bab016
--- /dev/null
+++ b/core/modules/migrate/src/Plugin/migrate/process/Explode.php
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\migrate\Plugin\migrate\process\Explode.
+ */
+
+namespace Drupal\migrate\Plugin\migrate\process;
+
+use Drupal\migrate\ProcessPluginBase;
+use Drupal\migrate\MigrateException;
+use Drupal\migrate\MigrateExecutableInterface;
+use Drupal\migrate\Row;
+
+/**
+ * This plugin explodes a value.
+ *
+ * @MigrateProcessPlugin(
+ *   id = "explode",
+ *   handle_multiples = TRUE
+ * )
+ */
+class Explode extends ProcessPluginBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
+    if (is_string($value)) {
+      if (!empty($this->configuration['delimiter'])) {
+        return explode($this->configuration['delimiter'], $value);
+      }
+      else {
+        throw new MigrateException('delimiter is empty');
+      }
+    }
+    else {
+      throw new MigrateException(sprintf('%s is not a string', var_export($value, TRUE)));
+    }
+  }
+
+}
diff --git a/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
new file mode 100644
index 0000000..e2b59b9
--- /dev/null
+++ b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\migrate\Unit\process\ExplodeTest.
+ */
+
+namespace Drupal\Tests\migrate\Unit\process;
+
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\migrate\Plugin\MigrateProcessInterface;
+use Drupal\migrate\Plugin\migrate\process\Explode;
+use Drupal\Tests\migrate\Unit\process\MigrateProcessTestCase;
+
+/**
+ * Tests the Explode process plugin.
+ *
+ * @group migrate
+ */
+class ExplodeTest extends MigrateProcessTestCase {
+
+  /**
+   * The module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
+   * The migration plugin.
+   *
+   * @var \Drupal\migrate\Plugin\MigrateProcessInterface
+   */
+  protected $migrationPlugin;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    $this->moduleHandler = $this->prophesize(ModuleHandlerInterface::class);
+    $this->migrationPlugin = $this->prophesize(MigrateProcessInterface::class);
+    parent::setUp();
+  }
+
+  /**
+   * Tests the transform process.
+   */
+  public function testTransform() {
+    $configuration['delimiter'] = '_';
+    $this->plugin = new Explode($configuration, 'explode', [], $this->moduleHandler->reveal(), $this->migrationPlugin->reveal());
+    $source = 'color_bartik_stylesheets';
+    $result = ['color', 'bartik', 'stylesheets'];
+    $transformed_value = $this->plugin->transform($source, $this->migrateExecutable, $this->row, 'destinationproperty');
+    $this->assertSame($result, $transformed_value);
+  }
+
+  /**
+   * Tests invalid input.
+   *
+   * @expectedException \Drupal\migrate\MigrateException
+   * @expectedExceptionMessage is not a string
+   */
+  public function testSourceString() {
+    $configuration['delimiter'] = '_';
+    $this->plugin = new Explode($configuration, 'explode', [], $this->moduleHandler->reveal(), $this->migrationPlugin->reveal());
+    $this->plugin->transform(['color_bartik_stylesheets'], $this->migrateExecutable, $this->row, 'destinationproperty');
+  }
+
+  /**
+   * Tests empty delimiter.
+   *
+   * @expectedException \Drupal\migrate\MigrateException
+   * @expectedExceptionMessage delimiter is empty
+   */
+  public function testDelimiterEmpty() {
+    $configuration['delimiter'] = '';
+    $this->plugin = new Explode($configuration, 'explode', [], $this->moduleHandler->reveal(), $this->migrationPlugin->reveal());
+    $this->plugin->transform('color_bartik_stylesheets', $this->migrateExecutable, $this->row, 'destinationproperty');
+  }
+
+}